<template>
    <div class="error-container">
        <div class="error-content">
            <a-row :gutter="20">
                <a-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12">
                    <div class="pic-error">
                        <img
                                alt="401"
                                class="pic-error-parent"
                                src="@/assets/error_images/404.png"
                        />
                        <img
                                alt="401"
                                class="pic-error-child left"
                                src="@/assets/error_images/cloud.png"
                        />
                        <img
                                alt="401"
                                class="pic-error-child"
                                src="@/assets/error_images/cloud.png"
                        />
                        <img
                                alt="401"
                                class="pic-error-child"
                                src="@/assets/error_images/cloud.png"
                        />
                    </div>
                </a-col>

                <a-col :xs="24" :sm="24" :md="12" :lg="12" :xl="12">
                    <div class="bullshit">
                        <div class="bullshit-oops">{{ data.oops }}</div>
                        <div class="bullshit-headline">{{ data.headline }}</div>
                        <div class="bullshit-info">{{ data.info }}</div>
                        <a class="bullshit-return-home" href="/">
                            {{ data.jumpTime }}s&nbsp;{{ data.btn }}
                        </a>
                    </div>
                </a-col>
            </a-row>
        </div>
    </div>
</template>

<script>
  import {reactive, onMounted, onBeforeUnmount} from 'vue';
    import {useRouter} from 'vue-router';
    import {Row, Col} from 'ant-design-vue';
    export default {
        name: "404",
        components: {
            [Row.name]: Row,
            [Col.name]: Col
        },
        setup() {
            const data = reactive({
                jumpTime: 10,
                oops: "抱歉!",
                headline: "当前页面不存在...",
                info: "请检查您输入的网址是否正确，或点击下面的按钮返回首页。",
                btn: "返回首页",
                timer: 0
            });
            const $router = useRouter();

            const timerChange = () => {
                data.timer = setInterval(() => {
                    if (data.jumpTime) {
                        data.jumpTime--;
                    } else {
                        $router.push({ path: "/" });
                        clearInterval(data.timer);
                    }
                }, 1000);
            };
            onMounted(()=>{
                timerChange();
            });
            onBeforeUnmount(()=>{
                clearInterval(data.timer);
            })
            return {
                data
            }
        }
    }
</script>

<style lang="scss" scoped>
    .error-container {
        position: absolute;
        top: 40%;
        left: 50%;
        transform: translate(-50%, -50%);

        .error-content {
            .pic-error {
                position: relative;
                float: left;
                width: 120%;
                overflow: hidden;

                &-parent {
                    width: 100%;
                }

                &-child {
                    position: absolute;

                    &.left {
                        top: 17px;
                        left: 220px;
                        width: 80px;
                        opacity: 0;
                        animation-name: cloudLeft;
                        animation-duration: 2s;
                        animation-timing-function: linear;
                        animation-delay: 1s;
                        animation-fill-mode: forwards;
                    }

                    &.mid {
                        top: 10px;
                        left: 420px;
                        width: 46px;
                        opacity: 0;
                        animation-name: cloudMid;
                        animation-duration: 2s;
                        animation-timing-function: linear;
                        animation-delay: 1.2s;
                        animation-fill-mode: forwards;
                    }

                    &.right {
                        top: 100px;
                        left: 500px;
                        width: 62px;
                        opacity: 0;
                        animation-name: cloudRight;
                        animation-duration: 2s;
                        animation-timing-function: linear;
                        animation-delay: 1s;
                        animation-fill-mode: forwards;
                    }

                    @keyframes cloudLeft {
                        0% {
                            top: 17px;
                            left: 220px;
                            opacity: 0;
                        }

                        20% {
                            top: 33px;
                            left: 188px;
                            opacity: 1;
                        }

                        80% {
                            top: 81px;
                            left: 92px;
                            opacity: 1;
                        }

                        100% {
                            top: 97px;
                            left: 60px;
                            opacity: 0;
                        }
                    }

                    @keyframes cloudMid {
                        0% {
                            top: 10px;
                            left: 420px;
                            opacity: 0;
                        }

                        20% {
                            top: 40px;
                            left: 360px;
                            opacity: 1;
                        }

                        70% {
                            top: 130px;
                            left: 180px;
                            opacity: 1;
                        }

                        100% {
                            top: 160px;
                            left: 120px;
                            opacity: 0;
                        }
                    }

                    @keyframes cloudRight {
                        0% {
                            top: 100px;
                            left: 500px;
                            opacity: 0;
                        }

                        20% {
                            top: 120px;
                            left: 460px;
                            opacity: 1;
                        }

                        80% {
                            top: 180px;
                            left: 340px;
                            opacity: 1;
                        }

                        100% {
                            top: 200px;
                            left: 300px;
                            opacity: 0;
                        }
                    }
                }
            }

            .bullshit {
                position: relative;
                float: left;
                width: 300px;
                padding: 30px 0;
                overflow: hidden;

                &-oops {
                    margin-bottom: 20px;
                    font-size: 32px;
                    font-weight: bold;
                    line-height: 40px;
                    color: $base-color-blue;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-fill-mode: forwards;
                }

                &-headline {
                    margin-bottom: 10px;
                    font-size: 20px;
                    font-weight: bold;
                    line-height: 24px;
                    color: #222;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.1s;
                    animation-fill-mode: forwards;
                }

                &-info {
                    margin-bottom: 30px;
                    font-size: 13px;
                    line-height: 21px;
                    color: $base-color-gray;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.2s;
                    animation-fill-mode: forwards;
                }

                &-return-home {
                    display: block;
                    height: 36px;
                    font-size: 14px;
                    line-height: 36px;
                    color: #fff;
                    text-align: center;
                    cursor: pointer;
                    background: $base-color-blue;
                    border-radius: 100px;
                    opacity: 0;
                    animation-name: slideUp;
                    animation-duration: 0.5s;
                    animation-delay: 0.3s;
                    animation-fill-mode: forwards;
                }

                @keyframes slideUp {
                    0% {
                        opacity: 0;
                        transform: translateY(60px);
                    }

                    100% {
                        opacity: 1;
                        transform: translateY(0);
                    }
                }
            }
        }
    }
</style>
